Theory of Knowledge is a Diploma Programme Core requirement. 

Theory of Knowledge (TOK) is an interdisciplinary requirement intended to stimulate critical reflection on the knowledge and experience gained inside and outside the classroom. The course challenges students to question the bases of knowledge, to be aware of subjective and ideological biases, and to develop the ability to analyze evidence that is expressed in a rational argument. It is a key element in encouraging them to appreciate other cultural perspectives. The course is unique to the IB, which recommends at least 100 hours of teaching time spanning the program’s two years. In addition to extensive meaningful coursework, students create and present a TOK exhibition and a TOK essay. Successful completion of both the exhibition and essay is required to earn the IB Diploma.